diff --git a/gradle-plugins/api-scanner/src/main/java/net/corda/plugins/ScanApi.java b/gradle-plugins/api-scanner/src/main/java/net/corda/plugins/ScanApi.java
index 6e10ec1fe3..f0220add42 100644
--- a/gradle-plugins/api-scanner/src/main/java/net/corda/plugins/ScanApi.java
+++ b/gradle-plugins/api-scanner/src/main/java/net/corda/plugins/ScanApi.java
@@ -286,7 +286,7 @@ public class ScanApi extends DefaultTask {
             return 0;
         }
 
-        private String filterAnnotationsFor(MethodInfo method) {
+        private MethodInfo filterAnnotationsFor(MethodInfo method) {
             return new MethodInfo(
                 method.getClassName(),
                 method.getMethodName(),
@@ -295,7 +295,7 @@ public class ScanApi extends DefaultTask {
                 method.getAnnotationNames().stream()
                     .filter(ScanApi::isVisibleAnnotation)
                     .collect(toList())
-            ).toString();
+            );
         }
     }